Condenser for refrigerating apparatus



T. F. RAINSFORD ET AL CONDENSER FOR REFRIGERATING APPARATUS June 5,1928. 1,672,086

Filed May 18, 1925 2 Shgaets-Sheet 1 BY WW A a/M Wm fiM A TTORNEY.

June 5, 1928. 1,672Q086 T. F. RAINSFORD ET AL CONDENSER FORREFRIGERATING APPARATUS Filed May 18, 1925- 2 Sheets-Sheet 2 24 IATTORNEY6' Patented June 5, 19 28.

UNITED STATES PATENT OFFICE.

'rnomas F. Ramsroan am) moms o. WHITEHEAI), cinnamon, moment; SAIDnamsronn assrenon '10 sun wnrrnnmn.

CONDENSER FOB BEFRIGERATING APPARATUS.

Application filed. May 18, 1925. Serial No. 31,151.

associating the fan with the condenser' whereby more efficient andsatisfactory results are obtainable during operation and whereby ameasure of protection against U j exterior contact, and consequently ameasure of safety, is obtainable.

The invention has also as an object to simplify, render more eflicient,and improve generally apparatus ofthis character, and the means forattaining all of the aforesaid objects as well as other advantages, andthe details of the construction of one illustrative example of theinvention will be made more apparent as this description proceeds,especially when considered in connection. with' the accompanyingdrawings, wherein: i

,Figure 1 is a view partly in vertical section and partlylin elevationof a refrigerating apparatus constructed in accordance with ourinvention,

Figure 2 is a vertical sectional view taken substantially on aplaneindicated by the line 33 in Figure 1,

Figure 3 is a top plan view of the apparatus, and

Figure 4 is a fragmentary sectional view of a modified form ofconstruction.

Referring now particularly to the drawings wherein like referencecharacters'indicate like. parts, it will be noted that the ap-' paratusconsists essentially of a base 10 formed preferably with a plurality ofdepending legs or feet 11 and with a raised table .or pedestal 12, towhich an electric motor 13, used in operating the apparatus, may besecured by means of bolts 14; threaded into pedestal 12.

Base 10 is formed'with an upright extension 15 to which a housing 16is'secured, preferably by means of bolts 17. Housing 16 is preferablyformed with an extension 18 constituting the cylinder of a compressor towhich the refrigerating medium is conducted through an inlet 19, thisrefrigerating medium being then compressed and ex pelled therefromthrough a conduit 20 to a radiator yet to be descrlbed. Y

J ournaled within suitable bearingsformed in the extension'15 of thebase and in casing 16 is a shaft 21, which shaft extendscentrally-through the condenser of the appara tus and is connected tothe motor 13 prefer ably by means of a flexible coupling 22. Shaft 21 isrotated by motor 13 and the piston (not shown) of the compressor issuitably connected to' the shaft so as to be reciprocated thereby.

The condenser comprises a lowerheader 23 formed preferably, although notnecessarily, integrally with base 10. A conduit 24 having a threadedconnection with header 23, leads to the brine tanks (not shown), wherebythe refrigerating medium, after passing through the condenser, may beconducted to these brine tanks. 2

The upper hgader consists essentially of a cap plate 25 substantiallybowed or semicircular in transverse cross section which is cooperativelyassociated with a top header plate 26. This latter plate is providedwith a plurality, here shown as three, threaded apertures for'thereception of the threaded lowerends of tie-bolts or. rods 27 whichproject upwardly from plate 26, passing through apertures 28in cap plate25 and having threaded ends for the reception of cap nuts 29. The upperface of plate 26 is peripherally grooved for the reception of a sealmgwire 30 adapted to rest therein and to be.

engaged by an annular horizontal flange 31 formed on cap plate 25'.Consequently when cap nuts 29 are tightened cap plate 25 is forcedtightly against sealing wire 31 and a water tight compartment or header32 is formed In Figure 4 the cap plate 25 is shown as welded to headerplate 26' at its periphery as shown at 27. In thisconstruction the bolts27 are eliminated.

, Upper header 32 is connected to lower header 23. by'a plurality ofvertically extending water tu es 33, the upper ends of which extendthrough suitably arranged apertures in plate 26 and are anchored theretoas by flaring the ends of the tubes as indicated at 34.. The lower endsof these tubes pass through and are anchored in anchor plates 35,preferably in the same manneras the upper ends of the tubes, theseplates 35 resting on u standing bosses 36 formed on wall 37 0 the lowerheader. These are centrally apertured as shown at 38 for affordingcommunication between the tubes 33 and header 23, the plates beingrigidly mounted upon bosses 36 by means of bolts 39 passing upwardlythrough the headers and threadedly engaging the said anchor plates.

Associated with the water tubes 33 is a plurality of horizontallyarranged spaced fin or heat radiating plates 40, which plates preferablyextend entirely "transversely and longitudinally of the Condenser.Arranged centrally of the condenser in a space pro- .Vided by properlyarranging water tubes 33 and by interrupting certain of the fin plates40, as clearly shown in Figure 1, is a fan 41. Fan 41 is keyed as at 42to shaft 21 and is prevented from longitudinal displacement on thisshaft by means of a fixed collar 43 on one end and an adjustable collar44 on the other, which latter element constitutes a part of anexpansible chamber 45 surrounding shaft 21 and constituting a sealtherefor. Liquid for this seal is supplied through a passageway formedin shaft 21 which communicates with the interior of casing 16 whichcontains a supply of lubricant. By keying fan 41 to shaft 21 it isoperated by motor 13 when shaft 21 is rotated. The tubes and fin platesare also spaced and arranged to provide atransverse passage throughwhich said shaft 21 extends.

. The fan 41 is arranged substantially centrally of the assembledcondenser, it being centered both laterally and longitudinally of thecondenser so that it is entirely surrounded by the fin plates40 thereofand by the water tubes 33.

In operation, air will consequently be drawn from one vertical face ofthe conprotection against exteriorinterference such as moving objects orthe clothing or person of the operator. In constructions involving a fanor the like rotating at a relatively high speed there is always anelement of danger owing to the possibility of contact with the fan ofsome object or of the person of the operator. With this presentconstruction the fan is entirely encased or surrounded by the condenserconstruction and the above noted objections are entirely eliminated.

As nrentioned above, during operation, the. refrigerating medium iscompressed by the compressor 18 and is forced through conduit 20 whichis preferably connected to a valve 46, which in turn is connected to aninteriorally threaded laterally extended boss 47 formed on cap plate 25.Hence the refrigerating medium enters header 32 and .50 formed on capplate 25.

With the herein described construction the condenser may be quickly andeasily manufactured and assembled with facility owing to its simplicityand the accessibilit of the connections. Furthermore worn or amagedparts may also be readily replaced.

While one specific embodiment of the invention has been shown anddescribed somewhat in detail, it is not intended that the inventionshould be unnecessarily limited, as

various. rearrangements and modifications $5 of the specificconstruction shown may be made as found necessary or desirablewithout'departing fromthespirit and scope of the invention, and to thisend reservation is made to make such chan es as may come within thepurview of t e accompanying claim.

What we claim as our invention is:

In a condenser construction, upper and lower headers, vertical watertubes connecting said'headers, horizontal fin plates associated withsaid tubes, said 'tubesand fin plates being arranged to form a recesssubstantially centrally of the condenser structure for receiving acooling fan, and spaced anchor plates for said tubes secured to thelower header upon opposite sides of the recess aforesaid and havingapertures therein communicating with said lower header.

In testimony whereof we aflix our signatures.

THOMAS F. RAINSFORD. THOMAS C. WHITEHEAD.

